Bulletin d’avalanche

South Rockies

Mar 17 – 18, 2013Avalanche Canada
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Archivé · expiré 14 years ago

Danger d’avalanche

Tue
Wed
Alpin
4 · Fort
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–4
    Be alert for wind slabs behind ridges and terrain breaks. Cornices may be touchy too.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–4
    New snow is likely to slide easily on a buried crust. It may have enough force to trip you up or carry you into a terrain trap.

Confidence

Fair - Forecast snowfall amounts are uncertain on Monday

Weather Forecast

Monday: Light snow (5-10 cm). Moderate W to NW winds. Alpine temperature near -9.Tuesday: No snow. Light W winds. Alpine temperature near -6.Wednesday: Light snow. Light to moderate SW winds. Alpine temperature near -4.

Avalanche Summary

Observations were limited during Sunday's storm, but it's suspected that some natural activity occurred in response to rapid snow loading.

Snowpack Summary

20-30 cm snowfall on Sunday landed on a crust above about 2000 m, or moist snow at lower elevations. Ridge top winds have been from SW and NW directions, creating wind slabs on a variety of lee and cross-loaded slopes. Deeper in the snowpack, a series of crust layers makes up the upper snowpack. The mid-pack is reported to be generally well-settled. Cornices are large and fragile in some areas.

Régions couvertes